# Find the Surface Area box (6in)(3in)(11in) h=6inl=3inw=11in
The surface area of a box is equal to the sum of the areas of each side of the box.
2⋅(length)⋅(width)+2⋅(length)⋅(height)+2⋅(width)⋅(height)
Substitute the values of the length l=3, the width w=11, and the height h=6 into the formula.
2⋅3⋅11+2⋅3⋅6+2⋅11⋅6
Simplify each term.
Multiply 2 by 3.
6⋅11+2⋅3⋅6+2⋅11⋅6
Multiply 6 by 11.
66+2⋅3⋅6+2⋅11⋅6
Multiply 2 by 3.
66+6⋅6+2⋅11⋅6
Multiply 6 by 6.
66+36+2⋅11⋅6
Multiply 2 by 11.
66+36+22⋅6
Multiply 22 by 6.
66+36+132
66+36+132
Simplify by adding numbers.
Add 66 and 36.
102+132
Add 102 and 132.
234
234(in)2
Find the Surface Area box (6in)(3in)(11in)

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